Windshield wiper blade adapter



FIG. 1 is a perspective view of the windshield wiper blade adapter showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right-side elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a windshield wiper blade adapter, as shown and described. 